$317+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Jun 9 — Jun 161
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Friday and return on a Tuesday
Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 10, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 10, 2026.
This Trip.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:40 pm
SEA
- HEL
2 stops16h 40m
Multiple Airlines
Mon 8/317:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$636
This Mytrip deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:45 am
SEA
- HEL
3 stops24h 55m
Multiple Airlines
Tue 8/258:30 am
HEL
- SEA
2 stops22h 37m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$659
This Mytrip deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:45 am
SEA
- HEL
3 stops28h 15m
Multiple Airlines
Wed 9/99:20 pm
HEL
- SEA
3 stops33h 44m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$675
This Trip.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/82:35 pm
SEA
- HEL
2 stops18h 45m
Multiple Airlines
Tue 11/177:20 am
HEL
- SEA
2 stops19h 40m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$709
This Mytrip deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/203:40 pm
SEA
- HEL
2 stops15h 00m
Multiple Airlines
Thu 8/67:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$780
This Trip.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 pm
SEA
- HEL
2 stops19h 05m
Multiple Airlines
Mon 6/17:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$792
This Mytrip deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/203:40 pm
SEA
- HEL
3 stops30h 40m
Multiple Airlines
Tue 8/410:30 am
HEL
- SEA
2 stops35h 15m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$802
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:40 pm
SEA
- HEL
Nonstop9h 30m
Multiple Airlines
Tue 9/2211:55 pm
HEL
- SEA
3 stops44h 27m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$809
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:40 pm
SEA
- HEL
Nonstop9h 30m
Multiple Airlines
Thu 9/249:05 pm
HEL
- SEA
3 stops47h 17m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$817
This oojo deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:40 pm
SEA
- HEL
2 stops17h 00m
Icelandair
Tue 9/1511:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/6![Icelandair logo]()
$822
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 10, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 10, 2026.
This Icelandair deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 pm
SEA
- HEL
2 stops14h 45m
Icelandair
Wed 9/3012:30 pm
HEL
- SEA
2 stops15h 25m
Icelandair
Deal found 5/9![Icelandair logo]()
$903
This Turkish Airlines deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Wed 9/2312:05 pm
HEL
- SEA
1 stop39h 10m
Turkish Airlines
Deal found 5/9![Turkish Airlines logo]()
$928
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/31:40 pm
SEA
- HEL
1 stop16h 45m
Delta
Tue 11/177:00 am
HEL
- SEA
2 stops27h 18m
Delta
Deal found 5/6![Delta logo]()
$1,032
This Icelandair deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 pm
SEA
- HEL
2 stops14h 45m
Icelandair
Sat 9/1912:30 pm
HEL
- SEA
2 stops18h 10m
Icelandair
Deal found 5/9![Icelandair logo]()
$953
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/31:40 pm
SEA
- HEL
1 stop16h 45m
Delta
Mon 11/162:05 pm
HEL
- SEA
2 stops42h 06m
Delta
Deal found 5/6![Delta logo]()
$1,032
This Icelandair deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:40 pm
SEA
- HEL
2 stops17h 00m
Icelandair
Thu 9/311:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/9![Icelandair logo]()
$959
This Icelandair deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:00 pm
SEA
- HEL
2 stops14h 45m
Icelandair
Wed 9/211:40 am
HEL
- SEA
2 stops16h 15m
Icelandair
Deal found 5/5![Icelandair logo]()
$975
This Icelandair deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/163:40 pm
SEA
- HEL
2 stops18h 05m
Icelandair
Fri 8/2811:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 5/5![Icelandair logo]()
$981
This Icelandair deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:25 pm
SEA
- HEL
1 stop28h 35m
Icelandair
Fri 9/253:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 5/9![Icelandair logo]()
$983
This Icelandair deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:25 pm
SEA
- HEL
1 stop28h 35m
Icelandair
Sun 9/207:10 am
HEL
- SEA
1 stop20h 45m
Icelandair
Deal found 5/9![Icelandair logo]()
$983
This Icelandair deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:40 pm
SEA
- HEL
1 stop12h 20m
Icelandair
Thu 9/37:10 am
HEL
- SEA
1 stop14h 35m
Icelandair
Deal found 5/5![Icelandair logo]()
$1,049
This Icelandair deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:00 pm
SEA
- HEL
1 stop17h 30m
Icelandair
Mon 7/2711:30 pm
HEL
- SEA
1 stop22h 15m
Icelandair
Deal found 5/7![Icelandair logo]()
$1,049
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated May 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated May 10, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 pm
SEA
- HEL
1 stop33h 00m
Icelandair
Tue 5/263:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 5/5![Icelandair logo]()
$947
This Mytrip deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:00 pm
SEA
- HEL
2 stops20h 30m
Multiple Airlines
Mon 6/19:05 pm
HEL
- SEA
2 stops24h 40m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$860
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/263:55 pm
SEA
- HEL
1 stop13h 25m
Scandinavian Airlines
Mon 6/19:05 pm
HEL
- SEA
1 stop26h 40m
Scandinavian Airlines
Deal found 5/6![Scandinavian Airlines logo]()
$914
This Trip.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 pm
SEA
- HEL
2 stops19h 05m
Multiple Airlines
Mon 6/17:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$792
This Mytrip deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/103:40 pm
SEA
- HEL
3 stops22h 25m
Multiple Airlines
Wed 6/171:55 pm
HEL
- SEA
2 stops16h 45m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$832
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
- HEL
2 stops35h 40m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/263:40 pm
SEA
- HEL
3 stops32h 05m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:00 pm
SEA
- HEL
3 stops33h 45m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:25 pm
SEA
- HEL
3 stops53h 20m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:25 pm
SEA
- HEL
2 stops37h 30m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:25 pm
SEA
- HEL
2 stops29h 55m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1711:25 pm
SEA
- HEL
2 stops29h 55m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:00 pm
SEA
- HEL
3 stops29h 30m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:40 pm
SEA
- HEL
3 stops22h 10m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$424
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $636 (Trip.com) |
One-way from | $317 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,082 |
Good round-trip deal | $1,139 or less |
Good one-way deal | $471 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 10, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 9/13
7:00 pm-7:45 pm
2 stops14h 45m
Helsinki-Vantaa
Wed 9/30
12:30 pm-5:55 pm
2 stops15h 25m
$903
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sat 9/12
7:10 pm-11:10 am
1 stop30h 00m
Helsinki-Vantaa
Wed 9/23
12:05 pm-5:15 pm
1 stop39h 10m
$928
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 9/6
7:00 pm-7:45 pm
2 stops14h 45m
Helsinki-Vantaa
Sat 9/19
12:30 pm-8:40 pm
2 stops18h 10m
$953
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 7/21
3:40 pm-6:40 pm
2 stops17h 00m
Helsinki-Vantaa
Thu 9/3
11:40 am-8:40 pm
2 stops19h 00m
$959
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 8/21
7:00 pm-7:45 pm
2 stops14h 45m
Helsinki-Vantaa
Wed 9/2
11:40 am-5:55 pm
2 stops16h 15m
$975
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 8/16
3:40 pm-7:45 pm
2 stops18h 05m
Helsinki-Vantaa
Fri 8/28
11:40 am-8:40 pm
2 stops19h 00m
$981
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sat 9/5
11:25 pm-2:00 pm
1 stop28h 35m
Helsinki-Vantaa
Fri 9/25
3:00 pm-8:40 pm
1 stop15h 40m
$983
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sat 9/5
11:25 pm-2:00 pm
1 stop28h 35m
Helsinki-Vantaa
Sun 9/20
7:10 am-5:55 pm
1 stop20h 45m
$983
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 11/3
1:40 pm-4:25 pm
1 stop16h 45m
Helsinki-Vantaa
Tue 11/17
7:00 am-12:18 am
2 stops27h 18m
$1,032
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 11/3
1:40 pm-4:25 pm
1 stop16h 45m
Helsinki-Vantaa
Mon 11/16
2:05 pm-10:11 pm
2 stops42h 06m
$1,032
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $540). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,181). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Helsinki?
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated May 10, 2026.
Get a feel of what it's like to fly with Finnair,Scandinavian Airlines, andAmerican Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Entertainment
6.9
Comfort
7.4
Crew
8.2
Boarding
7.7
Overall
7.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Food
6.7
Entertainment
6.9
Comfort
7.4
Crew
8.2
Boarding
7.7
Overall
7.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Food
6.7
Entertainment
6.9
Comfort
7.4
Crew
8.2
Boarding
7.7
Overall
7.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Food
6.7
Entertainment
6.9
Comfort
7.4
Crew
8.2
Boarding
7.7
Overall
7.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Food
6.7
Entertainment
6.9
Comfort
7.4
Crew
8.2
Boarding
7.7
Overall
7.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Food
6.7
Entertainment
6.9
Comfort
7.4
Crew
8.2
Boarding
7.7
Overall
7.6
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Related info for your journey
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Top 6 airlines flying from Seattle to Helsinki
Discover the top 6 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$548 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$424 | Average$826 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$496 | Average$1,028 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$536 | Average$1,056 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$700 | Average$1,114 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$725 | Average$1,148 | FlexibilityNo cancel fee | On-time70% |